<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<style>
			*{
			color: red;	
			font-size: 30px;
			}
			h3{
				color:green;
			}
			.dashuaibi{
				color: blue;
				font-size: 30px;
				
			}
		</style>
	</head>
	<body>
		<p>我是一个p标签</p>
		<p>我又是一个p标签</p>
		<h3>我还是一个h3标签</h3>
		<p class="dashuaibi">我又是一个p标签</p>
	</body>
</html>
